package io.learning;

import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.common.RemotingHelper;

public class SyncProducer {

  public static void main(String[] args) throws Exception {
    // 实例化消息生产者Producer
    DefaultMQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
    // 设置NameServer的地址
    producer.setNamesrvAddr("lutra.neibu.koolearn.com:80");
    // 启动Producer实例
    producer.start();
    for (int i = 0; i < 100; i++) {
      // 创建消息，并指定Topic，Tag和消息体
      Message msg = new Message("new_clue_prepare_to_calculate_score_topic" /* Topic */,
          "TagA" /* Tag */,
          ("Hello RocketMQ " + i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
      );
      // 发送消息到一个Broker
      SendResult sendResult = producer.send(msg);
      // 通过sendResult返回消息是否成功送达
      System.out.printf("%s%n", sendResult);
    }
    // 如果不再发送消息，关闭Producer实例。
    producer.shutdown();
  }
}
